Adding packstack

Change-Id: Ifb41f2a7c483164d52d289bf7288d428ac2bf9e1
Implemented review processing and stats calculation

* Added review control system module that retrieves reviews from Gerrit
* Refactored runtime storage not to depend on storage contents
* Refactored commit processor and new review processor is added
* Review record processor spawns reviews and marks
* Memory storage is made able to store reviews along with commits
* Migrated to hacking-0.6
* Marks are processed in contribution details and shown on engineer details screen

Implements blueprint review-stats

Change-Id: I80b70de372752cd3d1790da1904c0d423d61e81a
Fixed issue with missing commits for unmapped users

* Introduced syntetic primary key for user instead of launchpad id
* Removed start_date from release definition
* Normalize release data in storage
* Launchpad query to prod instead of stage

Change-Id: I647b197857ddf92bbd3b8c50ada6f02eaeaba5fb
Auto assign of releases to commits is implemented

* Default data processor is introduced
* Repo module is fixed in Vcs
* Fixed marks and review author and week fields

Implements blueprint auto-assign-release

Change-Id: Ic0bc297dd75b12e73cdd0256cf0c7684cc6cd158
Implemented intellectual update of default data

* Refactored record processor
* Refactored persistent storage
* Implemented records updater
* Fixed tests on record processor

Implements blueprint sync-default-data

Change-Id: If8367b77ea540eac296336b9bda6517f4cea9464
Merge "Adding packstack"
Fixed retrieving of commit index from vcs

Change-Id: Ic917f8f2bf734d7cb4a68eba325c686cbf7877d5
Mirantis style is applied to vanilla Stackalytics

Change-Id: Ieb13c766d568c618dc860c3b302af5e9a09ebb69
Banner generator is added

Change-Id: I841161a9ad0f1301b6f7e6a16c2f3368cce3e535